for the good guys. i am hearing the gun fire in the hallway. i am thinking in my mind i am the first classroom. why isn't he coming. i am thinking as a 6-year-old, 7-year-old what are your thoughts, what are your -- i am thinking that i have to almost be the parent, like i have to tell them, you know -- i said to them, i need you to know that i love you all very much. and that it is going to be okay. i thought it was the last thing they were ever going to hear. i thought we were all going to die. you know, i don't know if that's okay -- teachers and -- i wanted them to know someone loves them and i wanted that to be one of the last things they heard not the gun fire in the hallway. >> 20/20 ang kwoer chris cuomo spoke to parents as they rushed to the school. >> she talks about the heroic actions of her teacher. >> what do you remember? what happened?